OBN

OBN may refer to:


 * OBN, IATA code for Oban Airport in Scotland
 * Ocean Bottom Nightmare, a rock band from Nottingham, England
 * Oceania Broadcasting Network, a free-to-air television network in Tonga
 * Oklahoma Bureau of Narcotics and Dangerous Drugs Control, a state law enforcement agency in Oklahoma, US
 * Omni Broadcasting Network (2003–2013), former US regional television network
 * "Order Of The Brown Nose", a mock honour awarded by British satirical magazine Private Eye for published examples of sycophancy
 * Oromia Broadcasting Network, a regional broadcaster in Ethiopia
 * OBN Televizija, a terrestrial television network in Bosnia-Herzegovina